2154784290 has 16 divisors (see below), whose sum is σ = 5171482368. Its totient is φ = 574609136.

The previous prime is 2154784277. The next prime is 2154784321. The reversal of 2154784290 is 924874512.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35913042 + ... + 35913101.

It is an arithmetic number, because the mean of its divisors is an integer number (323217648).

Almost surely, 2^2154784290 is an apocalyptic number.

2154784290 is an abundant number, since it is smaller than the sum of its proper divisors (3016698078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2154784290 is a wasteful number, since it uses less digits than its factorization.

2154784290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71826153.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 2154784290 is about 46419.6541348597. The cubic root of 2154784290 is about 1291.6195211281.

The spelling of 2154784290 in words is "two billion, one hundred fifty-four million, seven hundred eighty-four thousand, two hundred ninety".